{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "Polymeric triamcinolone acetonide nanoparticles as a new alternative in the treatment of uveitis : In vitro and in vivo studies ."}
{"Chemical": ["Polymeric triamcinolone acetonide"]}